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Subject[tip:perf/core] perf tools: Add perf_data_file__write interface
Commit-ID:  6f9a317f2a2d4950880ecfa7eea53ed79f85255f
Gitweb: http://git.kernel.org/tip/6f9a317f2a2d4950880ecfa7eea53ed79f85255f
Author: Jiri Olsa <jolsa@redhat.com>
AuthorDate: Thu, 28 Nov 2013 11:30:17 +0100
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 2 Dec 2013 09:22:46 -0300

perf tools: Add perf_data_file__write interface

Adding perf_data_file__write interface to centralize output to files.
The function prototype is:

ssize_t perf_data_file__write(struct perf_data_file *file,
void *buf, size_t size);

Returns number of bytes written or -1 in case of error.

NOTE: Also indenting 'struct perf_data_file' members, no functional
change done.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1385634619-8129-6-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/data.c | 6 ++++++
tools/perf/util/data.h | 14 ++++++++------
2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index 7d09faf..1fbcd8b 100644
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -118,3 +118,9 @@ void perf_data_file__close(struct perf_data_file *file)
{
close(file->fd);
}
+
+ssize_t perf_data_file__write(struct perf_data_file *file,
+ void *buf, size_t size)
+{
+ return writen(file->fd, buf, size);
+}
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h
index 8c2df80..2b15d0c 100644
--- a/tools/perf/util/data.h
+++ b/tools/perf/util/data.h
@@ -9,12 +9,12 @@ enum perf_data_mode {
};

struct perf_data_file {
- const char *path;
- int fd;
- bool is_pipe;
- bool force;
- unsigned long size;
- enum perf_data_mode mode;
+ const char *path;
+ int fd;
+ bool is_pipe;
+ bool force;
+ unsigned long size;
+ enum perf_data_mode mode;
};

static inline bool perf_data_file__is_read(struct perf_data_file *file)
@@ -44,5 +44,7 @@ static inline unsigned long perf_data_file__size(struct perf_data_file *file)

int perf_data_file__open(struct perf_data_file *file);
void perf_data_file__close(struct perf_data_file *file);
+ssize_t perf_data_file__write(struct perf_data_file *file,
+ void *buf, size_t size);

#endif /* __PERF_DATA_H */

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